Christmas Spirit Retake Mid Exam - 18 December 2018

using System;
using System.Collections.Generic;
using System.Linq;

namespace Christmas_Spirit
{
    class Program
    {
        static void Main()
        {
            var decorPrices = new Decorations(2, 5, 3, 15);

            int quantity = int.Parse(Console.ReadLine());

            int days = int.Parse(Console.ReadLine());

            int christmasSpirit = 0;

            int cost = 0;

            for (int i = 1; i <= days; i++)
            {
                if (i % 11 == 0)
                {
                    quantity += 2;
                }

                if (i % 2 == 0)
                {
                    cost += quantity * decorPrices.OrnamentSet;
                    christmasSpirit += 5;
                }

                if (i % 3 == 0)
                {
                    cost += quantity * (decorPrices.TreeSkirt + decorPrices.TreeGarlands);
                    christmasSpirit += 13;
                }

                if (i % 5 == 0)
                {
                    cost += quantity * decorPrices.TreeLights;
                    christmasSpirit += 17;

                    if (i % 3 == 0)
                    {
                        christmasSpirit += 30;
                    }
                }

                if (i % 10 == 0)
                {
                    christmasSpirit -= 20;

                    cost += decorPrices.TreeSkirt + decorPrices.TreeGarlands + decorPrices.TreeLights;

                    if (i == days)
                    {
                        christmasSpirit -= 30;
                    }
                }
            }

            Console.WriteLine($"Total cost: {cost}");
            Console.WriteLine($"Total spirit: {christmasSpirit}");

        }
    }

  class Decorations
    {
        public Decorations(int ornamentSet, int treeSkirt, int treeGarlands, int treeLights)
        {
            OrnamentSet = ornamentSet;
            TreeSkirt = treeSkirt;
            TreeGarlands = treeGarlands;
            TreeLights = treeLights;

        }
        public int OrnamentSet { get; set; }
        public int TreeSkirt { get; set; }
        public int TreeGarlands { get; set; }
        public int TreeLights { get; set; }
    }
}